Thinking more about a DHT for querying NIP-65 relay list metadata and had an idea. It could be possible to instead have a DHT-like protocol for relays for querying relay list meta data, where if the relay itself doesn't have it, it could ask their neighbors if they have it, and so on with a max hop count. However, rather than it being distributed by hash, it would be distributed by social connection and a web-of-trust.